Letter from an Unknown Woman

Joan Fontaine

as Lisa Berndle

Louis Jourdan

as Stefan Brand

Mady Christians

as Frau Berndle

Marcel Journet

as Johann Stauffer

Art Smith

as John

Carol Yorke

as Marie

Howard Freeman

as Herr Kastner

John Good

as Lt. Leopold von Kaltnegger

Leo B. Pessin

as Stefan Jr.

Erskine Sanford

as Porter

Otto Waldis

as Concierge

Sonja Bryden

as Frau Spitzer

Patricia Alphin

as Pretty Girl (uncredited)

Harry Anderson

as Minor Role (uncredited)

Edit Angold

as Middle-Aged Woman (uncredited)

Betty Blythe

as Frau Kohner (uncredited)

Gabrielle Windsor

as Ballet Girl (uncredited)

June Wood

as Cashier (uncredited)

Judith Woodbury

as Model (uncredited)

Mary Worth

as Musician (uncredited)

Jack Worth

as Officer (uncredited)